Well, I'm 18. For as long as I can remember, I basically sit all day every day at my desk in solitude. It started with minor recurring chest pains in one spot, which have started again a bit. Lately- sharp left wrist pain by pulse all day, and the last week I can't put any pressure anywhere without a blood rush after I release: I can't sit comfortably nor stand as it occurs in my feet too. Family history of blood issues. Very dehydrated constantly. This is now every day, worse on my left side.